django-models

问题 I have three objects: Thing some fields Bucket things = models.ManyToManyField(Thing) User buckets = models.ManyToManyField(Bucket) things = models.ManyToManyField(Thing) When editing my "Bucket" field in the admin, I want to be able to select Things, but only those things that are in the "Things" list on the user currently logged in. How can I do that? In other words, how can I filter the list of Things in the Bucket admin? Thank you very much for your help in advance. 回答1: There is a

问题 I'm coding a news site.Now I'm detailing with the comment post function.And meet the issue says: Reverse for 'update_comment' with arguments '('',)' not found. 1 pattern(s) tried: ['comment\\/(?P<news_pk>[0-9]+)$'] I have tried many ways and times but still can't solve it and I can't find any wrong with my code.And really need your help. The comment post function is in the news_detail.html. There are two important apps in my project news and operation comment models is under operation Here is

问题 I have the following code in one of my models: def shortDescription(self): return self.name + ' ' + self.class_date.strftime("%I:%M") self.class_date is a timezone aware DateTimeField , self.class_date.is_aware() is True , USE_TZ is True . The shortDescription returns a string that gives the time in UTC rather than the default timezone, putting {{ aclass.class_date }} in the template displays the time in the correct zone. Is strftime always working on the base, native time? Or what else is

问题 I am writing a web application for my engineering company (warning: I am a programmer only by hobby) and was planning on using Django until I hit this snag. The models I want to use naturally have multi-column primary keys. Per http://code.djangoproject.com/ticket/373, I can't use Django, at least not a released version. Can anyone help me with a workaround, whether it be via another web framework (Python-based only, please) or by suggesting changes to the model so it will work with Django's

问题 I have this simplified model: class Item(models.Model): name = models.CharField(max_length=120) class ItemImage(models.Model): image = models.ImageField(upload_to='upload_dir') item = models.ForeignKey(Item) An Item can have many ItemImages . I also have a template rendering the following data set from the view: items = Item.objects.all() So now I would want to do something like this in the template: {% for item in items %} <div> {{ item.name }}<br> <img src="{{ item.itemimage_set.all()[0] }}

问题 This question already has answers here : How to update an object from edit form in Django? (2 answers) Closed 3 years ago . I need to have a form that allows the creation or addition of sessions on a planning Model class Session(models.Model): tutor = models.ForeignKey(User) start_time = models.DateTimeField() end_time = models.DateTimeField() Form class SessionForm(forms.ModelForm): class Meta: model = Session exclude = ['tutor'] View to render the form def editor(request): if request.method

问题 This question already has answers here : How to update an object from edit form in Django? (2 answers) Closed 3 years ago . I need to have a form that allows the creation or addition of sessions on a planning Model class Session(models.Model): tutor = models.ForeignKey(User) start_time = models.DateTimeField() end_time = models.DateTimeField() Form class SessionForm(forms.ModelForm): class Meta: model = Session exclude = ['tutor'] View to render the form def editor(request): if request.method

问题 This question already has answers here : How to update an object from edit form in Django? (2 answers) Closed 3 years ago . I need to have a form that allows the creation or addition of sessions on a planning Model class Session(models.Model): tutor = models.ForeignKey(User) start_time = models.DateTimeField() end_time = models.DateTimeField() Form class SessionForm(forms.ModelForm): class Meta: model = Session exclude = ['tutor'] View to render the form def editor(request): if request.method

问题 I can't find it anywhere, so your help will be nice for me :) Here is that field: categories = models.ManyToManyField(fragmentCategory) FragmentCategory: class fragmentCategory(models.Model): CATEGORY_CHOICES = ( ('val1', 'value1'), ('val2', 'value2'), ('val3', 'value3'), ) name = models.CharField(max_length=20, choices=CATEGORY_CHOICES) Here is the form to send: <input type="checkbox" name="val1" /> <input type="checkbox" name="val2" /> <input type="checkbox" name="val3" /> I tried something

问题 I can't find it anywhere, so your help will be nice for me :) Here is that field: categories = models.ManyToManyField(fragmentCategory) FragmentCategory: class fragmentCategory(models.Model): CATEGORY_CHOICES = ( ('val1', 'value1'), ('val2', 'value2'), ('val3', 'value3'), ) name = models.CharField(max_length=20, choices=CATEGORY_CHOICES) Here is the form to send: <input type="checkbox" name="val1" /> <input type="checkbox" name="val2" /> <input type="checkbox" name="val3" /> I tried something